| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 8 |
0.5%
|
|
| 2015 | 328 |
19%
|
|
| 2016 | 448 |
26%
|
|
| 2017 | 375 |
21.7%
|
|
| 2018 | 287 |
16.6%
|
|
| 2019 | 235 |
13.6%
|
|
| 2020 | 44 |
2.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 11224 |